Fire-door apparatus.



W. T. LANE.

FIRE DOOR APPARATUS.

APPLICATION HLED MAR. 25. 191s,

Patented Dec. 24, 1918.

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` mvEN-ron W. T. LANE.

FIRE DOOR APPARATUS.

APPLICATION FILED MAII. 25. IsIa.

Patented Dec. 24, 1918.

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WILLIAM T. LANE, 0F BAYSIDE, YORK, ASSIGNOE T0 FRANKLIN RAILWAY SUPPLYCOMPANY, 0F WILMINGTON, DELAWARE, A CORPDBATON 0F DELWLRE.

FIRE-DOOR APPARATUS.

To all whom it may concern.'

Be it known that l, WILLIAM T. LANE, a citizen of the United States,residing at Bayside, in the county of Queens and State of New York, haveinvented a certain new and useful lmprovement in .Fire-Door Apparatus,of which improvement the following is a specification.

r1l`his invention relates to fire door apparatus for locomotive boilers,and more particularly to boilers having large fire door openings withdouble doors of the so-called butterfly type, in which the door platesswing laterally and vertically in opposite directions, one of theobjects being to provide an improved motor device for operating eitherone ol the door plates separately and independently of the other.Another object is to provide an improved hand-operated device foropening either door independently.

With these and other objects in view, my invention comprises a certainconstruction and combination of parts which will nonT be fullydescribed, the novel features being set 'orth in the claims.

ln the accompanying drawing, Figure l is a front elevation of a liredoor apparatus embodying my improvement; Fig. 2 a detail view showing aportion of one of the door plates and the cylinder partly in section;and Fig. 3 a transverse sectional view taken on the line 3-3 of Fig. 2.

ln locomotive boilers provided with large lire door openings and doubledoors of suficient width to allow for delivering fuel through the sameinto the fire box at either side when only one door is open, itisdesirable that the two doors should be independently operable in orderthat onedoor may be kept closed at the time of tiring and thus preventthe admission olD large quantities of cold air to the fire box, while atthe same time economizing in the-use of power and reducing the wear ofthe apparatus.

According to the construction shown, a frame 5, is bolted to the backhead of the locomotive boiler around the lire door opening, and carriesthe two pivot bolts 6, and 6a, on which are mounted the two door plates,7 and 7a, which are adapted to swing laterally and vertically and meettogether upon a vertical center line when in the normal closed position.A horizontal cylinder Specioation of Letters Patent.

)Patented Dee. 2e, ldl.

Application led March 25, 1918. Serial No. 224,451.

8, is also mounted above the door and contains two pistons 9, and 9a, atopposite ends of the cylinder, said pistons having pins l0, and 10a,projecting out through a slot 11, in the cylinder. rlhe doors areprovided with arms 12, and 12a, which are connected by the respectivelinks 13, and 133, with the pins of the pistons for operating the doorswith Huid pressure, the armand link being so positioned as to occupy astraight line in the full open position of the door, thereby operatingas a cushionto the openin movement in that position.

lanual valve devices 14, and 14ga, may be employed for controlling thefluid supply to and the exhaust from the respective ends of thecylinder, the valves 'being usually actuated by a well known form ofpedal appliance, not shown. By operating one of the 'manual valves,either right or left as desired, the corresponding door may be opened byduid pressure admitted to act upon the piston at that end of thecylinder,

and then as the duid ressure is permitted to exhaust the door wilFbeclosed by gravity.

ln order to operate, the doors ,or either of them, by hand two handles15, and l5, are pivotally mounted on the respective bolts or. pins 16,and 16, on which are also mounted the sleeves 17, and 17a, and gear'segments 18, and 18a, the latter being ar- -ranged to mesh withcorresponding gear segments 19, and 19a, respectively, on the doorplates 7, and 7a. rl`he sleeves are provided with projections 20, and20a, for engaging corresponding lugs 2l, and 21a, on the respectivesegment gears 18, and 18a. Each handle is connected with its respectivesleeve so as to have a relative lateral movement to provide forcooperation with the usual notches of its respective quadrant 22, or22a, as will be readily understood.

lV hen one of the doors is operated by fluid pressure the gear segmentis turned in such direction that the lug 18 moves away from theprojection 20 of the sleeve 17, so that the handle remains stationary inits notch upon the quadrant. .Vhen it is desired to open the door byhand, the handle is pulled down and the projection on the sleeve engagesthe lug on the gear segment so as to rotate the same with it, and bymeans of the intermeshing gears the door is swung up on its pivot to itsopen position. as indicated in dotted lines.

When it is desired to shovel coal onto the ire at either side of thetirebox, torinstance at the left hand side, *the valve device la, isopened by the reman in the usual way, thus admitting compressed air fromthe supply pipe to the pipe leading to the left hand in oppositedirections, a fluid pressure cylinend of cylinder '8, where it actuatesthe piston 9a, to move the pin 10a, andlink 13a, connected to the lugl2, ot the door 7, and causing the door to swing upward on its pivot tothe open position, indicated in dotted lines in Fig, l. rl`he door 7, atthe other side inthe meantime remains closed.'

and prevents the admission of cold air vthrough that side ot |the reboxwhile the reman is delivering coal through the door at the lett handside. When he has delivered the coal through said door and wishes toclose the same he releases the valve device .permitting the same *toclose, thus shutting od the supply of duid to the cylinder and openingthe exhaust port 23, tor allowing v the duid to exhaust from thecylinder andl 'the door to close by gravity.

llt will now be seen that by means ot my improvement either one of thedoor plates may be operated separately and independentl'y of the other,and either by fluid pressure or by hand, as desired.. l

-Having now described my invention, what l claim 'as new and desire tosecure by Letters Patent, is:

1. ln a fire door apparatus, the combination or" two door plates mountedto swing laterally and vertically in opposite ldirections and adaptedtocover the furnace opening, a horizontal cylinder above said doors,

`two pistons at opposite ends ot said cylinder, and a mechanicalconnection from each piston to one of said doors for operating the 'sameindependently.

2. ln a lire ldoor apparatus, the combination, of two door platespivotally mounted to swing laterally and vertically in oppositedirections, a horizontal cylinder above the door, two pistons in saidcylinder, each door plate having an arm extending above its pivot, and alink connecting each piston with one of said arms.

3. lln a hre door apparatus, the combination with two door platesmounted to move der, two pistons yat opposite ends of said cylinder,connections froml said pistons to the respective door plates, andindependent man- .ually operated valves for controlling the operatingthe door.

5.111 a lire door apparatus, the combina ition of a door plate`pivotally mounted to swing laterally and vertically, a cylinder andpistonfor operating said. door, a handle mounted on a pivot separatefrom that of the door plate, a gear segment carried by the door, anothergear segment meshing with the hist and mounted on the pivotal axis ofthe handle, and means actuated by thel handle for turning said gears. Yl

6. lin a dre door apparatus, the combination of a doorplate pivotallymounted to swing laterally and vertically, a cylinder and piston forloperating said door, a haridle mounted on a pivotV`A separate trom thatot the door plate, a'sleeve operated by the handle and provided with aprojection, a

gear segment carried by the door, and an-l m hand.

y WILM T. LANE.

